body{
	margin: 0 auto;
	padding: 0;
}
#top{
	margin-top: 20px;
	float: left;
	width: 100%;
}
#ss{
	width: 100%;
	height: 100%;
	text-align: center;
}
#s1{
	width: 45%;
	height: 90%;
	display: inline-block;
}
#s2{
	width: 45%;
	height: 90%;
	display: inline-block;
	vertical-align: top;
}
